The regular use of text messages and e-mails can ____1____ the IQ more than twice as ____2____ as smoking marijuana That is the ____3____ of psychologists who have found that tapping ____4____ on a mobile phone or computer keypad or ____5____ them for electronic messages temporarily knocks up to 10 points ____6____ the user's IQ.

　　This rate of decline in intelligence compares ____7____ with the four-point drop in IQ ____8____ with smoking marijuana, according to British researchers, who have ____9____ the fleeting phenomenon of enhanced stupidity as "infomania". Research on sleep ____10____ suggests that the IQ drop caused by electronic ____11____ is also equivalent to a wakeful night.

　　Infomania is mainly a problem for adult workers, especially men, the study commissioned by Hewlett Packard, the technology company, has concluded.

　　The noticeable drop in IQ is ____12____ to the constant distraction of "always on" technology when employees should be concentrating on what they are paid to do. Infomania means that they lose concentration as their minds remain fixed in an almost ____13____ state of readiness to react to technology instead of focusing on the task in hand.

　　The brain also finds it hard to ____14____ with juggling lots of tasks at once, reducing its overall effectiveness, the report added. And while modern technology can have huge benefits, ____15____ use can be damaging not only to a person's mind, but to their social life.

　　1、A.increase　　B.add　　C.decline　　D.lower

　　2、A.well　　B.much　　C.few　　D.little

　　3、A.decision　　B.conduction　　C.claim　　D.call

　　4、A.up　　B.away　　C.to　　D with

　　5、A.investigating　　B.checking　　C.writing　　D.sending

　　6、A.in　　B.on　　C.off　　D.up

　　7、A.favourably　　B.unfavourably　　C.efficiently　　D.effectively

　　8、A.associated　　B.concerned　　C.in terms　　D.connected

　　9、A.meant　　B.wrote　　C.labored　　D.labeled

　　10、A.deprivation　　B.likeness　　C.inclination　　D.tendency

　　11、A.carelessness　　B.obsession　　C.favor　　D.habit

　　12、A.concerned　　B.resulted　　C.attributed　　D contributed

　　13、A.promising　　B.permanent　　C.temporary　　D.prospective

　　14、A.come　　B.coordinate　　C.cope　　D.cut

　　15、A.less　　B.exterior　　C.extra　　D.excessive

　參考答案：

　　1、D　2、B　3、C　4、B　5、B　6、C　7、B　8、A

　　9、D　10、A　11、B　12、C　13、B　14、C　15、D